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<div class="title">math functions </div>  </div>
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<div class="textblock"><p><b>Path:</b> /sdk/add_on/scriptmath/</p>
<p>This add-on registers the math functions from the standard C runtime library with the script engine. Use <code>RegisterScriptMath(asIScriptEngine*)</code> to perform the registration.</p>
<p>By defining the preprocessor word AS_USE_FLOAT=0, the functions will be registered to take and return doubles instead of floats.</p>
<p>The function <code>RegisterScriptMathComplex(asIScriptEngine*)</code> registers a type that represents a complex number, i.e. a number with real and imaginary parts.</p>
<h1><a class="anchor" id="doc_addon_math_1"></a>
Public script interface</h1>
<pre>
  // Trigonometric functions
  float cos(float rad);
  float sin(float rad);
  float tan(float rad);</pre><pre>  // Inverse trigonometric functions
  float acos(float val);
  float asin(float val);
  float atan(float val);
  float atan2(float y, float x);</pre><pre>  // Hyperbolic functions
  float cosh(float rad);
  float sinh(float rad);
  float tanh(float rad);</pre><pre>  // Logarithmic functions
  float log(float val);
  float log10(float val);</pre><pre>  // Power to
  float pow(float val, float exp);</pre><pre>  // Square root
  float sqrt(float val);</pre><pre>  // Absolute value
  float abs(float val);</pre><pre>  // Ceil and floor functions
  float ceil(float val);
  float floor(float val);</pre><pre>  // Returns the fraction
  float fraction(float val);</pre><pre>  // Approximate float comparison, to deal with numeric imprecision
  bool closeTo(float a, float b, float epsilon = 0.00001f);
  bool closeTo(double a, double b, double epsilon = 0.0000000001);</pre><pre>  // Conversion between floating point and IEEE 754 representations
  float  fpFromIEEE(uint raw); 
  double fpFromIEEE(uint64 raw);
  uint   fpToIEEE(float fp);
  uint64 fpToIEEE(double fp);</pre><pre>  // This type represents a complex number with real and imaginary parts
  class complex
  {
    // Constructors
    complex();
    complex(const complex &amp;in);
    complex(float r);
    complex(float r, float i);</pre><pre>    // Equality operator
    bool opEquals(const complex &amp;in) const;</pre><pre>    // Compound assignment operators
    complex &amp;opAddAssign(const complex &amp;in);
    complex &amp;opSubAssign(const complex &amp;in);
    complex &amp;opMulAssign(const complex &amp;in);
    complex &amp;opDivAssign(const complex &amp;in);</pre><pre>    // Math operators
    complex opAdd(const complex &amp;in) const;
    complex opSub(const complex &amp;in) const;
    complex opMul(const complex &amp;in) const;
    complex opDiv(const complex &amp;in) const;</pre><pre>    // Returns the absolute value (magnitude)
    float abs() const;</pre><pre>    // Swizzle operators
    complex get_ri() const;
    void set_ri(const complex &amp;in);
    complex get_ir() const;
    void set_ir(const complex &amp;in);</pre><pre>    // The real and imaginary parts
    float r;
    float i;
  }
</pre><dl class="todo"><dt><b><a class="el" href="todo.html#_todo000004">Todo:</a></b></dt><dd>Document the interface</dd></dl>
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